/* 移动端导航样式 */
.mobile-nav-toggle {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: #333;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: #fff;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        padding: 0.5rem;
    }

    .user-actions {
        display: none;
    }

    .user-actions.active {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem;
        background-color: #fff;
        position: fixed;
        top: 80px;
        right: 0;
        width: 100%;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .login-btn, .register-btn {
        width: 100%;
        text-align: center;
    }
}